Communication networks and systems for power utility automation - Part 4: System and project management (IEC 61850-4:2011 + A1:2020); German version EN 61850-4:2011 + A1:2020
Safety of machinery - Safety requirements for the design and construction of paper making and finishing machines - Part 4: Pulpers and their loading facilities; German version EN 1034-4:2005+A1:2009— 23 стр.
